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diff --git a/src/stlplus/persistence/persistent_cstring.cpp b/src/stlplus/persistence/persistent_cstring.cpp
deleted file mode 100644
index a829b9a..0000000
--- a/src/stlplus/persistence/persistent_cstring.cpp
+++ /dev/null
@@ -1,63 +0,0 @@
-////////////////////////////////////////////////////////////////////////////////
-
-//   Author:    Andy Rushton
-//   Copyright: (c) Southampton University 1999-2004
-//              (c) Andy Rushton           2004-2009
-//   License:   BSD License, see ../docs/license.html
-
-////////////////////////////////////////////////////////////////////////////////
-
-#include "persistent_cstring.hpp"
-#include "persistent_int.hpp"
-#include <string.h>
-
-////////////////////////////////////////////////////////////////////////////////
-// Null-terminated char arrays
-// Format: address [ size data ]
-
-void stlplus::dump_cstring(stlplus::dump_context& context, const char* data) throw(stlplus::persistent_dump_failed)
-{
-  // register the address and get the magic key for it
-  std::pair<bool,unsigned> mapping = context.pointer_map(data);
-  stlplus::dump_unsigned(context,mapping.second);
-  // if the address is null, then that is all that we need to do
-  // however, if it is non-null and this is the first sight of the address, dump the contents
-  if (data && !mapping.first)
-  {
-    unsigned size = strlen(data);
-    stlplus::dump_unsigned(context,size);
-    for (unsigned i = 0; i < size; i++)
-      stlplus::dump_char(context,data[i]);
-  }
-}
-
-void stlplus::restore_cstring(restore_context& context, char*& data) throw(stlplus::persistent_restore_failed)
-{
-  // destroy any previous contents
-  if (data)
-  {
-    delete[] data;
-    data = 0;
-  }
-  // get the magic key
-  unsigned magic = 0;
-  stlplus::restore_unsigned(context,magic);
-  // now lookup the magic key to see if this pointer has already been restored
-  // null pointers are always flagged as already restored
-  std::pair<bool,void*> address = context.pointer_map(magic);
-  if (!address.first)
-  {
-    // this pointer has never been seen before and is non-null
-    // restore the string
-    unsigned size = 0;
-    stlplus::restore_unsigned(context,size);
-    data = new char[size+1];
-    for (unsigned i = 0; i < size; i++)
-      stlplus::restore_char(context,data[i]);
-    data[size] = '\0';
-    // add this pointer to the set of already seen objects
-    context.pointer_add(magic,data);
-  }
-}
-
-////////////////////////////////////////////////////////////////////////////////